Publication

Highly accurate measurements of temperature and strain-dependence of Brillouin gain in single-mode fibres

Luc Thévenaz
1995
Conference Papers

Abstract

Distributed Brillouin gain measurements along single mode fibres have demonstrated their potentiality for local temperature sensing and monitoring strains experienced by optical fibres. The results of such measurements is directly related to the acoustic properties of the fibre medium that are temperature- and strain-dependent. The Brillouin gain spectrum (BGS) is classically measured by launching a highly coherent pump lightwave into a test fibre and by observing the amplification of a weak probe signal propagating in the backward direction

Official source

https://infoscience.epfl.ch/entities/publication/d434548c-0f11-4045-88a8-7c6d580ec7c9

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Luc Thévenaz
1995
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/d434548c-0f11-4045-88a8-7c6d580ec7c9

About this result

Related concepts (25)

Temperature

Temperature is a physical quantity that expresses quantitatively the perceptions of hotness and coldness. Temperature is measured with a thermometer. Thermometers are calibrated in various temperature scales that historically have relied on various reference points and thermometric substances for definition. The most common scales are the Celsius scale with the unit symbol °C (formerly called centigrade), the Fahrenheit scale (°F), and the Kelvin scale (K), the latter being used predominantly for scientific purposes.

Single-mode optical fiber

In fiber-optic communication, a single-mode optical fiber (SMF), also known as fundamental- or mono-mode, is an optical fiber designed to carry only a single mode of light - the transverse mode. Modes are the possible solutions of the Helmholtz equation for waves, which is obtained by combining Maxwell's equations and the boundary conditions. These modes define the way the wave travels through space, i.e. how the wave is distributed in space. Waves can have the same mode but have different frequencies.

Multi-mode optical fiber

Multi-mode optical fiber is a type of optical fiber mostly used for communication over short distances, such as within a building or on a campus. Multi-mode links can be used for data rates up to 100 Gbit/s. Multi-mode fiber has a fairly large core diameter that enables multiple light modes to be propagated and limits the maximum length of a transmission link because of modal dispersion. The standard G.651.1 defines the most widely used forms of multi-mode optical fiber.

Related publications (26)

Highly accurate measurements of temperature and strain-dependence of Brillouin gain in single-mode fibres

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